Understanding the Saffir-Simpson Hurricane Wind Scale in Under 5 Minutes
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating system that classifies hurricanes based on their maximum sustained wind speeds. This scale helps estimate potential property damage and flooding expected along the coast from a hurricane's landfall. It's important to note that the scale focuses solely on wind speed and does not account for other hazards such as storm surge, rainfall flooding, and tornadoes. (nhc.noaa.gov)
Category 1: Winds 74-95 mph (119-153 km/h)
Very dangerous winds will produce some damage:
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Well-constructed frame homes could have damage to roof, shingles, vinyl siding, and gutters.
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Large branches of trees will snap, and shallowly rooted trees may be toppled.
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Extensive damage to power lines and poles is likely, resulting in power outages that could last a few to several days. (nhc.noaa.gov)
Category 2: Winds 96-110 mph (154-177 km/h)
Extremely dangerous winds will cause extensive damage:
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Well-constructed frame homes could sustain major roof and siding damage.
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Many shallowly rooted trees will be snapped or uprooted, blocking numerous roads.
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Near-total power loss is expected, with outages that could last from several days to weeks. (nhc.noaa.gov)
Category 3: Winds 111-129 mph (178-208 km/h)
Devastating damage will occur:
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Well-built framed homes may incur major damage or removal of roof decking and gable ends.
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Many trees will be snapped or uprooted, blocking numerous roads.
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Electricity and water will be unavailable for several days to weeks after the storm passes. (nhc.noaa.gov)
Category 4: Winds 130-156 mph (209-251 km/h)
Catastrophic damage will occur:
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Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls.
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Most trees will be snapped or uprooted, and power poles downed.
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Fallen trees and power poles will isolate residential areas.
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Power outages will last weeks to possibly months. (nhc.noaa.gov)
Category 5: Winds 157 mph or higher (252 km/h or higher)
Catastrophic damage will occur:
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A high percentage of framed homes will be destroyed, with total roof failure and wall collapse.
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Fallen trees and power poles will isolate residential areas.
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Power outages will last for weeks to possibly months.
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Most of the area will be uninhabitable for weeks or months. (nhc.noaa.gov)
Understanding the Saffir-Simpson Hurricane Wind Scale is crucial for preparing for hurricanes. While all hurricanes are dangerous, those rated Category 3 and higher are considered major hurricanes and can cause devastating damage. It's essential to take protective actions, including evacuating from areas vulnerable to storm surge, regardless of the hurricane's category. (nhc.noaa.gov)
For a visual explanation of the Saffir-Simpson Hurricane Wind Scale, you can watch the following video: